... of three parts, they are fire protector, HEPA filter cartridge and active carbon filter. Filtration area 12 M2, and these filters ... down to 0.01mu. 5. Filter Data Filter Elements DataItemTechnical DataRemarkPre-filter/Fire protector.Main-filterHEPA cartridge, Filtration area 12 M2,life ... life-time 5-6 monthsChemical molecular, Oxidant & Active carbon adsorb noxious gas.Average filtration rate≥99.7%It ...